Re: Solver for the game "Set" matches three times

[ChOas]

I personally would try to keep track of the unique combinations of the cards using a hash, the keys being the card
sorted contactenated shape/color/pattern values of the cards.

so if I have 2 cards 2,3,1,2 and 1,2,3,1 first create two keys,
2312 and 1231, sort them 1231,2312, concat them as a key ++$unique_combo{"12312312"};

After been over all the cards the keys in my hash will be the unique combinations.

Further, @{$combo->[0]} should just dereference your array